package com.situ.web.filter;

import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

public class EncodingFilter implements Filter {

	@Override
	public void init(FilterConfig filterConfig) throws ServletException {
	}

	@Override
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
			throws IOException, ServletException {
		System.out.println("EncodingFilter.doFilter()");
		//处理POST请求乱码问题
		HttpServletRequest httpServletRequest = (HttpServletRequest) request;
		String method = httpServletRequest.getMethod();
		if ("post".equalsIgnoreCase(method)) {
			request.setCharacterEncoding("UTF-8");
		}
		//执行下一个过滤器或者放行（访问Servlet）
		chain.doFilter(request, response);
	}

	@Override
	public void destroy() {
	}
}
